Thomas william duffy



l (No Moaelftl T. W. DUFFY.

HATER 0R GONDBNSER. No. 264,448. y Patented Sept. 19, 188.2.;

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UNITED STATES PATENT OFFICE.

THOMAS WILLIAM DUFFY, OF LIVERPOOL,'COUNTY OF LANCASTER, ENG.- LAND, ASSIGNOR TO'ALEXANDER MGDONALD BLACK FRASER, OAF SAME PLAGE.

, HEATER OR CONDENSER.

SPECIFICATION forming part of Letters Patent N o. 264,448, dated September 19, 1882. b

Application filed May 1G, 1882. (No model.) Patented in England January 2, 1882, No. 15, and in Belgium February To all whom .it may concern Be it known that I, THOMAS WILLIAM DUF- EY, a subject of the Queenof Great Britain and Ireland,residingatLiverpool,in thecounty 5 ot' Lancaster, Kingdom of Great Britain and Ireland, have invented new and useful Improvemeuts in Heaters or 'Condensers,. (for which I have obtained a patent in Great Briti ain, No. 15, bearing date January 2, 1882, and

1o for which a patent in Belgium has been obtained by Alexander McDonald Black Fraser, No. 57,132, B, bearing dateFebruary 21, 1882,) of whichv the following is a specification.

This invention has for its object improvements in apparatus for transmitting heat to iiuids, applicable also for condensing or cooling purposes, and has reference to an apparatus so arranged that the two fluids-viz., the one to be heated or condensed or cooled, and zo the one employed as the heating, condensing, orcooliug mediumdo notcomein contact with each other, but are retained in annular chaml bers formed by corrugated tubes placed one inside another and abutting against end rings connected by bolts, which-extend from ring to ring, passing through the annular chambers. The chambers are provided with all necessary fittings for inlet and outlet of these iuids, and for the relief oi' excessive pressure, andfor the 3o admission of air when required.

Refer-rin g to the accompanying shectof drawings, Figure 1 is a vertical central section ot' an apparatus suitable for condensing steam produced from sea-water, fordrinkin gand other purposes. Fig. 2 is a halt' transverse section of the same and a half plan; Fig. 3, a section i to a larger scale, showing parts of two corrugated cylinders, an end ring, and a hollow ticrod. Fig. 4 is a similar view without the tie- 40 rod, and Fig. 5 is a section through an end ring and one of the tubes that afford communication between the closed annular chamber andthe outer sides of the tube-plate F. E A cylindrical outer casin gor shell, J, danged .t 5 at each end, is provi-ded with all necessary fiti tings, including branches C and D, for inlet and outlet respectively, and also with asafey ty-valve. (Not shown.) Each end is closed by v atube-plate, F,thesap1e diameter as the flanges of the shell. The upper tube-plate is covered by a dished lid provided with a steam-inlet branch, A, safety-valve, not shown,) and other fittings. rIhe said plate is the same diameter as the tube-plate, so that one set of bolts secures the three parts together. The lower tube-plate is held between the outer casing and a suitable base, G, which has branches B B for conducting the condensed duid away; also an air-pipe brauch, E, for inlet of air to aerate the condensed water. Within the outer shell or casing, J, corrugated tubes are arranged in such wise that between each pairan annular space, H, exists, available for the passage or circulation of one-of the two above-V mentioned fluids.

The relative diameters ofthe inner and outer tubes of a pair depend on the space required for the fluid. The corrugated tubes are shorter than the distance between the tube-plates F F to ailow the iiuids to pass upward or downward between the annular spaces. The tubes are corrugated in the form of a screw with a rounded thread. rIhe ends ot' the tubes are slightly hanged, or are turned over rings to strengthen them where they t into the end rings, I?, Figs. 3 and 4,'which close the annular openings between the ends of each pair of corrugated tubes, so as toform a joint. Each end ringy has two grooves or channels cut in it to receive the ends of the corrugated cylinders, andv these grooves are lined with soft metal, yarn, india-rubber, or other suitable material to form a joint. The end rings are forced down onto the cylinders by tie-bolts 0, hollow or solid, extending from ring to ring. Small pipes L L afford communication between the outer sides of the tube-plate F F and the Vannular spaces H H between the corrugated tubes. The number of such pipes is determined by the different capacities of the annular spaces. One method of forming these pipes is shown in Fig. 5, where the pipe L is formed with and constitutes part of the end ring, P. The outer end of each pipe is immediately A against the tube-plate, into contact with which it is drawn by a hollow setlscrew, K, passing through the tube-plate and screwedy into the pipe.

When the apparatus is used in the distillation of salt-water the steam entering at A passes through the above mentioned small pipes into the closed annular spaces II H, where it becomes condensed by the action ot' the circulating water entering at C and passing through the open annular spaces I I, and i'alls through the lower small pipes, L L, into the base G, where it is met and mixed with air.

When desirable, I electroplate or otherwise coat the corrugated tubes or other parts of the apparatus with a suitable metal, so that no injurious chemical action shall take place.

Any number of pairs ot' tubes may be placed insi/de each other, the outside shell being suficiently large to allow the cold water to circulate freely round. By making the tubes in the corrugated form a greater heating or cooling surface is obtained in a given space, and also suiiicient strength with comparatively thin tubes. By the belore-described arrangement any set ot' tubes may be easily withdrawn for cleaning or repairs.

For procuring a blast of fresh air a small motor of suitable construction is fixed on the steam-pipe or other convenient place, and is driven by steam, which afterward enters the condenser or cooling or heating apparatus. This motor is arranged to actuate a suitable fan, by which the air is transmitted to the base or lower chamber or other suitable part, and is there mixed with the distilled water. A tilter may be added to the apparatus when required.

1n some places I rind it convenient to form the corrugated cylinders or casings in seglnents, which may be half or quarter circles or other parts of circles.

I do not lay any general claim to the use in apparatus for the purposes specitied ot' a series otcylinders, tubes, or annular casin gs arranged one within another about a common center, as Iam aware such arrangements have been before proposed.

1. In an apparatus lfor transmitting heat to fluids, applicable also for condensing or cooling, the combination of an outer casing or shell, an inlet, an outlet, upper and lower tubeplates, a series of concentric corrugated cylinders or annular casings inclosed within said casing or shell between said tube-plates, and rings that unite said concentric annular cylinders in pairs at their ends, so as to form clpsed annular corrugated chambers, to which communication is afforded by pipes communicating with the outside of said tube-plates, with a base provided with an air-inlet for the purpose otaeratin g the water of condensation, substantially as described.

2. In an apparatus for transmitting vheat to fluids, applicable also for condensing or cooling, the combination of an outer casing or shell, tube-plates, concentric corrugated cylinders or annular casings, united in pairs by end rings, and pipes alfording communication between the closed annular chambers inclosed by said concentric corrugated cylinders or annular casin gs and the outsides of said tube-plates, with a base provided with an air-inlet for the purpose ot'aerating the water of condensation, substantially as described.

3. In an apparatus for transmitting heat to iuids, applicable also for condensing or cooling, the combination of concentric corrugated cylinders or annular casings, grooved end rings uniting said corrugated cylinders or annular casings in pairs, and tie-bolts passing between said corrugated cylinders or annular casings from rin g to ring, substantially as described.

4. 1n an apparatus for transmitting heat to fluids, applicable also for condensing or cooling, an end ring, I), with connecting-pipes L, constructed in one and the same piece of metal, grooved at its end and interiorlyscrew-threaded, in combination, the tube-plate F, and hollow set-screw K, as above described, for the purposes specified.

5. The apparatus for transmitting heat to fluids, applicable also for condensing or cool ing, consisting of an outer cylindrical casing or shell provided with inlet and outlet branches, a tube-plate at each end, a hollow base with outlets and inlets, a dished cover with an inlet, a series of concentric corrugated cylinders or annular casings, united in pairs at their ends by rings to form closed annular corrugated chambers, to which communication is at'- forded by pipes communicating with the outsides of the tube-plates, all substantially as described and shown.

THOMAS WILLIAM DUFFY. Witnesses:

S. W. DoD, Soleitors Clerk, 3 Union Court, Liverpool.

F. M. C. Scor'r, 89 Victoria Street, Liverpool. 

